Free mushroom calculators for your website
Growers, bloggers, clubs and suppliers are welcome to put our calculators straight into their own pages. They are free, need no signup, and stay free. Copy a snippet, paste it into your page, done. Grow mushrooms. Not spreadsheets.
Spawn to Substrate Ratio Calculator
Work out spawn weight for a bulk substrate batch at your chosen ratio.
<iframe src="https://hyphaefidelity.com/embed/spawn-ratio" title="Spawn to Substrate Ratio Calculator — Hyphae Fidelity" width="100%" height="900" style="border:1px solid #d9d5c7;border-radius:12px" loading="lazy"></iframe>Suggested size: full width of your content column (minimum 320px) and 900px tall. On narrow phones, allow up to 1100px so nothing is cut off.
Substrate Hydration Calculator
Mass-balance water calculation for hydrating coir, pellets, straw or soy hulls.
<iframe src="https://hyphaefidelity.com/embed/substrate-hydration" title="Substrate Hydration Calculator — Hyphae Fidelity" width="100%" height="900" style="border:1px solid #d9d5c7;border-radius:12px" loading="lazy"></iframe>Suggested size: full width of your content column (minimum 320px) and 900px tall. On narrow phones, allow up to 1100px so nothing is cut off.
Master's Mix Mushroom Substrate Calculator
Batch maths for 50:50 hardwood and soy hull substrate — per block and per batch.
<iframe src="https://hyphaefidelity.com/embed/masters-mix" title="Master's Mix Mushroom Substrate Calculator — Hyphae Fidelity" width="100%" height="900" style="border:1px solid #d9d5c7;border-radius:12px" loading="lazy"></iframe>Suggested size: full width of your content column (minimum 320px) and 900px tall. On narrow phones, allow up to 1100px so nothing is cut off.
Mushroom Substrate Selector
What should I grow it on? Choose a species and grow style for a sensible substrate starting point.
<iframe src="https://hyphaefidelity.com/embed/substrate-selector" title="Mushroom Substrate Selector — Hyphae Fidelity" width="100%" height="900" style="border:1px solid #d9d5c7;border-radius:12px" loading="lazy"></iframe>Suggested size: full width of your content column (minimum 320px) and 900px tall. On narrow phones, allow up to 1100px so nothing is cut off.
Mushroom Grow Bag Calculator
Scale a hydrated production block recipe across a whole batch of grow bags.
<iframe src="https://hyphaefidelity.com/embed/grow-bag" title="Mushroom Grow Bag Calculator — Hyphae Fidelity" width="100%" height="900" style="border:1px solid #d9d5c7;border-radius:12px" loading="lazy"></iframe>Suggested size: full width of your content column (minimum 320px) and 900px tall. On narrow phones, allow up to 1100px so nothing is cut off.
Biological Efficiency (BE) Calculator
Compare how much fresh mushroom a block returned against the dry substrate that went into it.
<iframe src="https://hyphaefidelity.com/embed/biological-efficiency" title="Biological Efficiency (BE) Calculator — Hyphae Fidelity" width="100%" height="900" style="border:1px solid #d9d5c7;border-radius:12px" loading="lazy"></iframe>Suggested size: full width of your content column (minimum 320px) and 900px tall. On narrow phones, allow up to 1100px so nothing is cut off.
Terms of use
- Free to use on any site, commercial or personal. No account or permission needed.
- The "Powered by Hyphae Fidelity" link must stay visible and clickable. That link carries a referral tag so we can count embed traffic in aggregate; it collects no personal data.
- No resale, sublicensing or white-labelling without written permission.
- Embedded copies are marked as non-indexable, so they never compete with your own pages or ours in search.
- We may change or improve the calculators; embeds update automatically.
Want a branded version?
Suppliers can have a product-specific calculator and QR grow journey tied to their own kits and substrates.
See the supplier partner programme